Catch Can Time?? "Low Oil Level"
Thread Starter
Racer
Joined: Jun 2010
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Catch Can Time?? "Low Oil Level"
Driving the vette ('01) yesterday, I got a message on the DIC "Low Oil Level." I checked the dipstick last night, and it was indeed low. I did some searching last night on catch cans but couldnt find exactly what I was looking for. I dont drive the car that hard, but I do like to clean the cobs out sometimes 
, who doesnt?
Anyway, I have read that the oil from the crankcase gets sucked into the manifold and burnt in the cylinders at high rpms. I would really like for that not to happen so I think the catch can is without a doubt the best idea. But how hard are they to install? How long do they take?
BTW, it has 2456.7mi since last oil change.
, who doesnt?Anyway, I have read that the oil from the crankcase gets sucked into the manifold and burnt in the cylinders at high rpms. I would really like for that not to happen so I think the catch can is without a doubt the best idea. But how hard are they to install? How long do they take?
BTW, it has 2456.7mi since last oil change.
Melting Slicks
Joined: Jun 2007
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From: Greenville SC
St. Jude Donor '10
They do catch oil and are good to have but if you lost enough oil to trip the warning message after 2400 miles you either have another problem or maybe not quite enough oil put in at the last change.
Premium Supporting Vendor
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From: Manassas Park VA
St. Jude Donor '07-'08,-'13-'14, '16-'17
Race Director
Joined: Jul 2007
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From: Texas Hill Country
I'm sorry but a catch can is a waste of time, btdt. You will still get oil in the intake. Remove your PCV valve and install a vacuum pump. It is unbelievable. Records of 20-30 extra HP, no leaks, no oil in intake, etc. I love it.
Instructor
Joined: Jul 2010
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From: Ludowici GA
i am a fond believer of catch cans. the new 5.7 and 6.1 Hemi motors are notorious for burning oil. My 300c went through a decent amount every oil change since it the day it rolled off the truck at the dealership. I put a catch can on and every oil change the catch can would be 2/3 to 3/4 full... so it obviously does its job
Burning Brakes
Joined: Dec 2009
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From: St Paul, MN; Orlando, FL
Can you provide a link to more info? I couldn't find anything searching the Forum.
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Thread Starter
Racer
Joined: Jun 2010
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Hmmmm. That vacuum pump sounds pretty good. More info please.
I think the oil had the proper amount put it at the last oil change, I know the guy that does it and he does everything meticulously.
When I posted the thread, I knew the catch can wouldnt help with oil consumption (should have been more clear). I figured it would be better off if it wasn't sucked in the intake manifold and burnt....if thats where its going....
I think the oil had the proper amount put it at the last oil change, I know the guy that does it and he does everything meticulously.
When I posted the thread, I knew the catch can wouldnt help with oil consumption (should have been more clear). I figured it would be better off if it wasn't sucked in the intake manifold and burnt....if thats where its going....
Instructor
Joined: Jul 2010
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From: Ludowici GA
Hmmmm. That vacuum pump sounds pretty good. More info please.
I think the oil had the proper amount put it at the last oil change, I know the guy that does it and he does everything meticulously.
When I posted the thread, I knew the catch can wouldnt help with oil consumption (should have been more clear). I figured it would be better off if it wasn't sucked in the intake manifold and burnt....if thats where its going....
I think the oil had the proper amount put it at the last oil change, I know the guy that does it and he does everything meticulously.
When I posted the thread, I knew the catch can wouldnt help with oil consumption (should have been more clear). I figured it would be better off if it wasn't sucked in the intake manifold and burnt....if thats where its going....
Burning Brakes
Joined: Jul 2009
Posts: 1,000
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From: Oklahoma
I Upgraded my pcv for a supercharged T bird which holds under high boost...imo it is better than the gm.. closes very tightly...and my saikou michi dual catch can. Both of these can help with it getting in the intake under full throttle.
Instructor
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From: Ludowici GA
just curious, how do you empty those catch cans? again my catch can was on a 300c, but this what i had. it was made from polished billet aluminum.
Drifting
Joined: Jun 2010
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From: Harrisburg Pa.
Drifting
Joined: Jun 2010
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From: Harrisburg Pa.
Melting Slicks
Joined: Aug 2006
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From: Tampa Bay, Go BUCS!!!Go Rays!!!Go Lightning!!!
St. Jude Donor '12-'13-'14
And really, ZombieSoldier, I'm so tempted to throw the bs flag since I can't think of a single reason that the minimal amount of oil vapor consumed, even from an engine with really bad rings or a faulty pcv could possibly result in a 20-30 rwhp difference.
More details please.......
And to the OP, that much oil "loss" in 2400 miles would concern me. A catch can won't cure that. It might catch the oil if is is being pushed thru the pcv system but tthat much oil would require you to check/empty the catch can almost every time you drove the car. You should check it out and see why you're losing that much oil.
GL
Last edited by jbondfl; Sep 6, 2010 at 01:48 PM.
Instructor
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From: Ludowici GA
Actually, unless the oil gathered by the vacuum pump is somehow returned to the crankcase it is still technically consumed. Agreeing with dklowrider about the different definitions I think it is fair to consider the oil consumed if it is lost. I understand that "lost" and "consumed thru the intake" have different long term effects on the engine but they are long term and honestly, mostly a housecleaning item more than a performance item.
And really, ZombieSoldier, I'm so tempted to throw the bs flag since I can't think of a single reason that the minimal amount of oil vapor consumed, even from an engine with really bad rings or a faulty pcv could possibly result in a 20-30 rwhp difference.
More details please.......
And to the OP, that much oil "loss" in 2400 miles would concern me. A catch can won't cure that. It might catch the oil if is is being pushed thru the pcv system but tthat much oil would require you to check/empty the catch can almost every time you drove the car. You should check it out and see why you're losing that much oil.
GL
And really, ZombieSoldier, I'm so tempted to throw the bs flag since I can't think of a single reason that the minimal amount of oil vapor consumed, even from an engine with really bad rings or a faulty pcv could possibly result in a 20-30 rwhp difference.
More details please.......
And to the OP, that much oil "loss" in 2400 miles would concern me. A catch can won't cure that. It might catch the oil if is is being pushed thru the pcv system but tthat much oil would require you to check/empty the catch can almost every time you drove the car. You should check it out and see why you're losing that much oil.
GL
im not the one who said anything about power increases or decreases. i was quoting Higgs Boson's post
Race Director
Joined: Dec 2000
Posts: 19,304
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From: San Diego CA
First off, we need to determine how "low" the oil was. One quart low in 2400 miles is not bad at all. High consumption is generally considered to be one quart in under 1000 miles.
But getting back to the catch can discussion - a vacuum pump is often used by racers since vacuum pressure that normally assists in pulling crankcase oil vapors through the intake is non-existant for a good majority of the time. Vacuum pressure typically peaks at idle. At wide open throttle conditions, crankcase vapor flow reverses so it exits the fresh air line. This line normally provides fresh air to the engine to replace air removed by the intake vacuum.
For average-to-aggressive street driving, a vacuum pump is typically not necessary. A catch can should not collect 4 ounces of oil every 100 miles. If it does, the piston rings are not doing their job of sealing adequately. For those who would like more information on catch can theory of operation and analysis of the various types of catch cans, see:
http://www.conceptualpolymer.com/PCV...oval%20102.pdf
IMO, every eight cylinder engine should have a catch can.
But getting back to the catch can discussion - a vacuum pump is often used by racers since vacuum pressure that normally assists in pulling crankcase oil vapors through the intake is non-existant for a good majority of the time. Vacuum pressure typically peaks at idle. At wide open throttle conditions, crankcase vapor flow reverses so it exits the fresh air line. This line normally provides fresh air to the engine to replace air removed by the intake vacuum.
For average-to-aggressive street driving, a vacuum pump is typically not necessary. A catch can should not collect 4 ounces of oil every 100 miles. If it does, the piston rings are not doing their job of sealing adequately. For those who would like more information on catch can theory of operation and analysis of the various types of catch cans, see:
http://www.conceptualpolymer.com/PCV...oval%20102.pdf
IMO, every eight cylinder engine should have a catch can.
